Who are the cast in chobits?

when i watched chobits in youtube I taught that the first name given to freya is elda and the first name given to chii is eruda. in chobits episode 25 the landlady or hibiya-san told hideki that the first chobit was elda or known as freya and the second chobit was eruda or known as chii but when i read the subs chii's first name was elda not eruda. what are their true names?

It seems that when Chii finally knew that Hideki loved her she launched a program which caused her to shut down and activate freya instead, Freya's heart had been in Chii's system despite all other data being deleted... Chii activated her only becoz of how lonely Freya had been, not bein able to have the one she loved... After activation Freya requested to be shut down for good... but after shut down Hideki's words reactivated Chii (Elda)

Freya (first chobit) Elda (second chobit, Chii)

Sometimes subs can mess up with names and such...

Elda is Chii.... Freya is her twin Chobit who was in love with the person who made her... Hibiya-san's husband...

Hope this helped